they look through the phone book and call the first stripper whose number they discover, asking him to quickly arrive at Monica's apartment where the party is taking place. When he turns up, the girls are surprised to see that he is at least 50 years old, but also delusional about his physical appearance, as he clearly has trouble accepting the fact that he has not aged gracefully and is not physically appealing to women anymore. When he sees that Phoebe is not enjoying his performance he gets annoyed, particularly when she claims while cringing that "this is how (she) looks when (she's) turned on." They have an argument over whether or not he should be paid for arriving after a rather difficult and rushed journey to the apartment on his part, and when she refuses to allow a sympathetic Rachel and Monica to pay him and also insults him, the sensitive stripper gets upset and cries as he is forced to accept the fact that he is no longer physically attractive, but stripping is all he knows. In her guilt, Phoebe comforts him and tells him that he should teach stripping instead. At her insistence, he then performs one last time for the party. Mackenzie Mackenzie (Dakota Fanning): the daughter of the current residents of the house Monica and Chandler buy. She winds up helping Joey deal with his anxieties about Chandler and Monica moving out of the city. As a bit of revenge for Joey's overanxious behavior, Monica and Chandler briefly pretend that Mackenzie is a ghost. Characters appearing in only one season Each of the following characters of Friends, portrayed by a celebrity, may or may not be particularly significant to the story Only in season 1 Joseph Tribbiani Sr. and Gloria Tribbiani In "The One with the Boobies" (airdate January 19, 1995; season 1, No. 13), Joey finds out that his father, Joey Sr. (Robert Costanzo), is having an affair with another woman, Ronni (Lee Garlington). Joey (the son) tries to set things right, but Gloria (Brenda Vaccaro), Joey's mother, who secretly knew about the affair all along, makes Joey change it back because her husband's been unusually nice to her since he started cheating on her. Though Joey's parents do not appear on the show again, Joey Sr. later makes an appearance on the spin-off series Joey, making Costanzo the only actor, besides Matt LeBlanc,